I first went camping as a kid, as many of us did. Cub Scouts, Boy Scouts, and family vacations, because my parents had more important things to spend the family budget on than hotels and restaurants. Things like food and clothes for us kids, you know, things like that.
Anyway, it was of course tents in those days, and I remember mom's insistence that the family tent have a floor. And of course it was a borrowed family tent when I finally convinced my new bride to try it.
After 55 years of tenting it, we finally decided we were getting too old to continue sleeping on the ground, and we were certainly tired of packing and unpacking EVERYTHING every time you wanted to move, so we bought a small TT.
And yes, you certainly can't claim that dragging the TT across the land is cheaper than staying in motels. But having your very own bed every night, and minimal packing/unpacking is worth every penny. Having a campground moose around all week -- PRICELESS.